Question
Biology Question on Mechanism Of Hormone Action
The hormone pepsin is activated by the
A
pH of saliva
B
pH of intestine
C
pH of stomach
D
pH of pancreas.
Answer
pH of stomach
Explanation
Solution
The gastric glands of the stomach secrete gastric juice, which contains hydrochloric acid, proenzymes??pepsinogen and prorennin. Hydrochloric acid (HCl) maintains a strongly acidic pH of about 1.5 to 2.5 in the stomach. HCl converts pepsinogen and prorennin into their active forms i.e., pepsin and rennin respectively.